موسسسه فرهنگی و اطلاع رسانی تبیان
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13 رجب 1434 - Friday, May 24, 2013
Science and Life
Fact of the Day: Sun Energy
100,000,000,000 tons of dynamite would have to be detonated every second to ...
A hinny is the offspring of a male horse and a female donkey ...
Knucklebones also known as hucklebones, dibs, dibstones, jackstones, chuckstones or ...
Cyberpunk is a science fiction genre noted for its focus on high ...
Oil lamp is a simple vessel used to produce light continuously for a period of
The Shahnameh, a historical epic work written in the late 10th century, gives a ...
In cryptography, a scytale is a tool used to perform a ...
Crystal Gazing (Part 1)
The Crystal Ball Scrying also called crystal gazing is a magic practice that ...
A pysanka is a Ukrainian Easter egg, decorated using a wax-resist ....
M. C. Escher − Drawing Hands, 1948.A strange loop arises when, by moving up or down ...
The Aramaic alphabet is an abjad, a consonantal alphabet, used for writing Aramaic. It is akin to the Phoenician alphabet, and became distinctive from it by the ...
Night lamp Holder
Print out the template. Cut out the outline of the star shape provided in the template. Place the star cutout on the card and ...
Holly and Ivy Garland
Cut the foam block into two equal pieces. Trim these to fit into each cylinder. Clip and hook the ...
Star-burst Candle Lantern
Draw the outline of a small star (of any shape) on one part of the plain paper. Cut it out. Using the cut-out as a template, form ...
Dried Fruit and Spices Wreath
Make your own dried fruits and vegetables. Cut the fruits (apples and oranges) into slices. Place them on a baking sheet in a warm oven for a few hours. You can also ...
Beaded Rainbow Catcher
Peel the protective backing sheet off the extra thick film. ut the design under the film and trace its shape using the gold outliner. Let the shape ...
Cut out similar shapes as the template from the felt. Using glue, attach the face portion to the ...
Ping Pong Puddings
Pass a fine knitting through the center of each of the tennis balls. Paint the balls brown. Apply 2-3 coats of paint on each of the ...
Fairy on the Tree
Place a saucer on the silver foil and trace its circular outline on the foil with marker. Cut the circle out of ...
What Is Insomnia?
Insomnia is a sleep disorder in which a person experiences poor sleep or has trouble...
Imagine there is a bank which credits your account each morning...
Major computer viruses
Major computer viruses over the last 25 years...
The universe has a huge hole in...
In ancient times, objects in the night sky conjured...
Decoding Evolution of Flowers
Unlike moths and butterflies that are often brilliantly colored to warn potential predators that they carry toxins, flowers and the ...
What Is Color? How Is It Made?
de? S ome details have an important place in the minds of humans and they never change. Let us begin with trees, which are very familiar to us. The color of trees is most often either green or shades of green. It is ...
Sulfur mustards are vesicants and alkylating agents, more commonly known as blister agents. They are olorless when pure but are generally a yellow to brown color and have...
mos Cosmos sulphureus (Asteraceae) A hardy, erect annual requiring very little moisture once established. A native of Mexico, it can easily adapt to all regions of the United States. The glowing, orange-yellow flowers...
row Achillea millefolium (Asteraceae) A drought tolerant perennial herb native to Europe, it has naturalized throughout temperate North America. The species name, millefolium-of a thousand leaves-describes the fine, f...
Cup Callirhoe involucrata (Malvaceae) A hardy, drought tolerant, sprawling perennial native to Texas and the central United States. The numerous trailing stems spread vinelike over the ground originating from a carrot...
A bushy biennial or perennial variety native to the Canary Islands, but has naturalized throughout much of northern North America. A charming species with an abundance of vivid ...
Tuber Vervain/Stiff Vervain
A hardy, upright perennial native to Brazil and Paraguay which has naturalized throughout the southeastern United States. The intense, deep purple to magenta flowers are numerous produ...
An erect, slender annual native to Morocco, which has naturalized throughout the United States. Tiny, delicate flowers with long spurs glisten from short spikes. Flowers come i...
A short, hardy annual native to California, but can be grown as far east as Texas. Seed should be sown after the last frost for best results. The attractive yellow flowers are isolat...
An erect, drought tolerant perennial which can also withstand prolonged periods of moisture. Native to the United States, east of the Rocky Mountains, it is now found throughout N...
An upright, hairy annual, perennial or biennial herb native to Texas with single erect stems and a slender taproot. The terminal red-orange flower is a misconception. Actuall...
Lupinus texensis (Fabaceae). A hardy winter annual native to Texas. Adopted as the "State Flower of Texas", this is the most commonly seen variety along roadsides and in uncultivated pastures throughout t...
Tahoka Daisy/Prairie Aster
Machaeranthera tanacetifolia (Asteraceae). A hardy upright to sprawling annual native to the mid-western United States. This variety is easy to recognize by the dense, compact leaves which are deeply divided into m...
A perennial variety which usually performs as an annual. Native to Europe, it has escaped cultivation and adapted to all regions of the United States. The brilliant little flowe...
A hardy annual native to Southern Europe, but has naturalized throughout the United States. Dense clusters of tiny snow-white flowers bloom continuously throughout the growing sea...
Ipomopsis rubra (Polemoniaceae). A sturdy, upright perennial variety native to the southeastern portion of the United States. The brilliant red, tubular flowers are marginally spaced throughout the entire length of...
Oenothera speciosa (Onagraceae). A hardy, upright to sprawling perennial, native to the southeastern United States extending into Mexico. The four petalled flowers are soft pink, making a transition to glistening w...
Chrysanthemum maximum (Asteraceae). A hardy perennial, forming dense colonies once established. Native to Europe, it has naturalized throughout all regions of the United States. The white petalled flowers with gold...
Salvia coccinea (Lamiaceae). A hardy annual or tender perennial, native to Texas, and found throughout the southern portion of the United States. In warmer climates, this variety tends to act as an annual. The fluo...
Linum rubrum (Linaceae). A hardy annual, native to northern Africa and southern Europe, it has naturalized throughout the United States. Once established this variety can tolerate immense heat and extremely dry con...
Lavatera trimestris (Malvaceae). A robust, fast growing annual, native to Europe, but has naturalized throughout the southeastern United States. Freely branching, it becomes covered with numerous, ice-white, pink o...
Viscaria oculata (Caryophyllaceae). A hardy, upright annual very easy to grow from seed throughout much of North America. This Old World variety is regaining popularity for its consistent flowering over the long su...
Rocky Mountain Penstemon
Penstemon strictus (Scrophulariaceae).An upright perennial native to the western and central United States. The closely packed snapdragon-like, purple, tubular flowers are arranged on a sturdy spike. Prefers full ...
Delphinium ajacis (Ranunculaceae).A winter annual, native to southern Europe, it has naturalized throughout the United States. Larkspurs are distinguished by a backward projecting spur, formed by the upper petal o...
Red Corn Poppy/Flanders Poppy
Papaver rhoeas (Papveraceae). A hardy annual native to Europe, which has naturalized throughout the United States. The large 2-4 inch blooms are fire engine-red vividly marked with purplish-black centers individual...
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